Had same problem on Thinkpad X61s with Hardy alpha 6. The fix reported in https://bugs.launchpad.net/ubuntu/+bug/172985 worked for me.
-- Impossible to change LCD brightness on Thinkpad R61i https://bugs.launchpad.net/bugs/198476 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
